/*
 * MIT License
 *
 * Copyright (c) 2024-2048 冰羽
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package cn.star.framework.entity;

import cn.hutool.core.util.StrUtil;
import cn.star.framework.identity.User;
import cn.star.framework.identity.UserIdentityService;
import java.util.Optional;
import lombok.extern.slf4j.Slf4j;
import org.springframework.data.domain.AuditorAware;
import org.springframework.data.jpa.repository.config.EnableJpaAuditing;

/**
 * {@link AuditorAware}实现<br>
 * 若要自动填充继承自{@link AbstractIdEntity}的字段，需要将<span color='red'>@{@link EnableJpaAuditing}
 * 在启动类处配置启用才能生效<br>
 *
 * @author zhaoweiping
 *     <p style='color: red'>Created on 2024-09-23 11:06:00
 * @since 3.0.0
 */
@Slf4j
public class AuditorAwareImpl implements AuditorAware<String> {
  private final UserIdentityService identityService;

  public AuditorAwareImpl(UserIdentityService identityService) {
    // Could not autowire. No beans of 'UserIdentityService' type found.
    this.identityService = identityService;
  }

  @Override
  public Optional<String> getCurrentAuditor() {
    try {
      return identityService == null ? Optional.empty() : this.getCurrentUser();
    } catch (Exception e) {
      log.warn("\uD83D\uDD34 -> Not found auditor user, {}", e.getMessage());
      return Optional.empty();
    }
  }

  private Optional<String> getCurrentUser() {
    User user = identityService.getCurrentUser();

    return StrUtil.isNotBlank(user.getUsername())
        ? Optional.of(user.getUsername())
        : Optional.empty();
  }
}
